For years I very firmly maintained that I would never, ever, ever, under no conceivable circumstances, definitely wouldn't buy anything made by Apple. Overpriced, overhyped sh*** that wouldn't do what I wanted it to do. None of my highly expensive noise analysis software will run on a Mac, nor will any of my noise meters connect to one.
BUT.......I'm writing this on an iPad 2 because I was visiting a friend who had one and decided to give it a go. Ok, it doesn't do everything I could want and I won't use it for work, but as an email client and for web access I can't fault it. The main advantage is that it's compact and flat so doesn't seem to intrude into my personal space the way a laptop does. Also Brilliant for Skype and displaying photos. I found a dirt cheap SD card and USB camera connector on Amazon, so I can download images from my Lumix with no hassle. Didn't bother with the 3G option, if I want a mobile Internet connection I can set up my HTC Desire as a local hotspot.
Overall I find it much more convenient than a laptop for the domestic type stuff but largely useless for my business, although some sectors may find more value in it. The only real disadvantage I can see is that it's made by Apple.....
Gordon